Short bowel syndrome, also called SBS, it is a condition in which nutrients are not properly absorbed due to severe intestinal disease resulting in the surgical removal of a large portion of the small intestine and/or colon.

Skin prick tests are used to diagnose allergies. The test is performed by scratching the outer surface of the skin on the forearm, applying a drop of an allergen solution to the skin, then watching for a reaction such as swelling or redness. It is useful for determining what a person is allergic to.